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Old May 19, 2012 | 08:53 PM
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Hello all, is their a way to tell if a twincam 88 motor has been bumped up to a 95 , i have the heads and cylinders off and need to get gasket kits, thanks for any responses.
 
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Old May 20, 2012 | 12:14 AM
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You could measure the cylinder ... the stock bore is 3-3/4" whereas the 95 is 3-7/8" ...
 
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Old May 20, 2012 | 12:38 AM
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Originally Posted by SURFOR Chop
You could measure the cylinder ... the stock bore is 3-3/4" whereas the 95 is 3-7/8" ...
This is pretty much the only way to check,unless yours is obviously more powerful than other 88s.
 
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Old May 20, 2012 | 06:55 AM
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i just measured the cylinders off my 2006 roadking and they measuer 3 3/4 my friend has a 2007 roadking with the 96 and his measured the same as mine did, iam just trying to figure out what was done to my motor, when i bought the bike it had 1,800 miles and one sales guy said it was bumped to a 95 and another said it wasnt
 
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Old May 20, 2012 | 08:01 AM
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the difference between the tc88 & tc96 is the crank stroke, the cylinders are the same.
 
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Old May 20, 2012 | 09:39 AM
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i was just reading that on another site, the 88 has a crank stroke of 4 and the 96 a crank stroke of 4 3/4, thanks for all the replies guys
 
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Old May 20, 2012 | 10:28 AM
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JFYI The 96" motor has a 4 3/8" crank, 3 3/4" bore.
The 88" motor uses a 4" crank with the same 3 3/4" bore.
No factory Harley cuurently uses a 4 3/4" stroke. Fastrider124
 
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Old May 20, 2012 | 12:53 PM
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Originally Posted by stevefxdi
Hello all, is their a way to tell if a twincam 88 motor has been bumped up to a 95 , i have the heads and cylinders off and need to get gasket kits, thanks for any responses.
A 95"er will have a bore of 3.875".
Scott
 
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Old May 20, 2012 | 06:24 PM
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sorry i put the stroke wrong for the 96 i meant 43/8 not 4 3/4
 
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Old May 21, 2012 | 05:30 AM
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No 4 3/4" arms for Twin Cams as a shelfed item @ S&S, but upon request, they'd build you one, but you'd need longer cylinders also.
We use 4 3/4" cranks from S&S all the time, when upgrading Shovel engines, for folks that need crank work, and also want more power.
Scott
 
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